New stopping rule — new_stopping_rule • psychTestRCAT

Creates a new stopping rule for the adaptive test.

new_stopping_rule(f, num_items_in_test = NULL)

Arguments

f	Function of the form `function(test_state) {...}`, which will be called whenever a new item is about to be administered. `test_state` is a data frame representing the current status of the adaptive test (items administered, participant responses, etc.). Currently the only method defined for `test_state` objects is `get_num_items_administered`; other extractors need to be defined manually.
num_items_in_test	(NULL or integerish scalar) If the number of items in the test is known, providing it in this argument allows it to be used by other test features, e.g. to tell the participant their progress through the test.

An object of class stopping_rule which can be passed to the stopping_rule argument of adapt_test.

A stopping rule defines a condition that is checked each time a new item is about to be administered.